As reported on in more detail at Talk Left, the FBI today released its report (available here) on arrests for 2008.
Ryan Grim at Huffington Post has reviewed the report and writes:
Someone is arrested in the United States for a drug-law violation every 18 seconds, an FBI report released Monday shows. More than four-fifths of those arrests were for possession only and nearly half were for possession of marijuana. Of the 847,863 marijuana arrests -- one every 37 seconds -- 89 percent were for possession alone.
Ryan Grim is the author of "This is Your Country on Drugs".